Observation 188455: Agaricales sensu lato

When: 2014-11-14

Collection location: Scientia 627-Jr, Pretoria, Gauteng, South Africa [Click for map]

Who: Glen van Niekerk (primordius)

No specimen available

Proposed Names

9% (3)
Recognized by sight
-34% (3)
Recognized by sight
Used references: A Field guide to the mushrooms of south Africa –
A practical handbook for collectors – 2nd edition
H.Levin – M.Branch – S.Rappoport – D.Mitchell
7% (4)
Recognized by sight: dark-edged gills, odd gray color, fibrillose-scaly cap
61% (2)
Recognized by sight
53% (3)
Recognized by sight: the dark, ridged lower stipe in photo 481855 along with the cracking plaques on the cap suggest Sarcomyxa (which is apparently an invalid name)

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I think
By: Glen van Niekerk (primordius)
2014-11-18 22:38:42 NZDT (+1300)

you are right regarding Panellus identification. I shall make this my next route of investigation.

By: Glen van Niekerk (primordius)
2014-11-17 19:24:17 NZDT (+1300)

Thank you for your insights. Herewith the last update regarding this observation. I shall be collecting it later today for spore prints.

In your 3rd photo
By: Daniel B. Wheeler (Tuberale)
2014-11-16 08:29:41 NZDT (+1300)

bottom of gills does appear to be blue.

And for this to be Pleurotus sajor-cajou, it does not need to be parasitic. But it is saprophytic, growing on dead portions of the tree. I’d say that Acacia is not long for this world. If the fungus has already colonied the bottom of the tree, the rest is going to go soon.

If it is Pleurotus sajor-cajou, it might be a valuable edible mushroom for South Africa. Pleurotus ostreatus (and here in Oregon, Pleurotus columbianum) produce massive fruitings on straw, wood, and waste cellulose substrates like sugar cane baggasse. One of the easiest ways to grow it would be on coffee grounds after brewing. I have seen massive fruitings on 5-gallon containers of used coffee grounds.

Older pictures
By: Glen van Niekerk (primordius)
2014-11-16 03:02:40 NZDT (+1300)

I have uploaded older pictures showing white lamellae. Also included is the host tree, Acacia sieberiana paperbark thorn tree. The fungus does not seem to be parasitic.

By: Christian (Christian Schwarz)
2014-11-15 09:14:30 NZDT (+1300)

I am not suggesting it is O. olearius.
But the gill color and cap texture don’t look like any Pleurotus I know.

Gills white (at least the back specimen)
By: Daniel B. Wheeler (Tuberale)
2014-11-15 09:07:58 NZDT (+1300)

and foreground, but mid-photo appear more blue. What color would you call the gills, Glen?

At the bottom there looks to be an annulus, yellowish.

The mature caps look to have some small scales on them, possible remants of a universal veil.

Can you name the tree these were growing on?

South African Omphalotus gills are
By: Glen van Niekerk (primordius)
2014-11-15 08:21:32 NZDT (+1300)

burnt orange….Thank you for your opinion!


Will post older pics as the mushroom develops.

Created: 2014-11-15 07:37:57 NZDT (+1300)
Last modified: 2017-03-07 08:55:40 NZDT (+1300)
Viewed: 141 times, last viewed: 2017-06-20 01:02:45 NZST (+1200)
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